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interface.h
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interface.h
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/* Interface function header.
* Copyright (C) 1999 Kunihiro Ishiguro
*
* This file is part of GNU Zebra.
*
* GNU Zebra is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* GNU Zebra is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Zebra; see the file COPYING. If not, write to the Free
* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#ifndef _ZEBRA_INTERFACE_H
#define _ZEBRA_INTERFACE_H
#include "redistribute.h"
#ifdef HAVE_IRDP
#include "zebra/irdp.h"
#endif
/* For interface multicast configuration. */
#define IF_ZEBRA_MULTICAST_UNSPEC 0
#define IF_ZEBRA_MULTICAST_ON 1
#define IF_ZEBRA_MULTICAST_OFF 2
/* For interface shutdown configuration. */
#define IF_ZEBRA_SHUTDOWN_OFF 0
#define IF_ZEBRA_SHUTDOWN_ON 1
/* Router advertisement feature. */
#if (defined(LINUX_IPV6) && (defined(__GLIBC__) && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 1)) || defined(KAME)
#ifdef HAVE_RTADV
#define RTADV
#endif
#endif
#ifdef RTADV
/* Router advertisement parameter. From RFC4861, RFC6275 and RFC4191. */
struct rtadvconf
{
/* A flag indicating whether or not the router sends periodic Router
Advertisements and responds to Router Solicitations.
Default: FALSE */
int AdvSendAdvertisements;
/* The maximum time allowed between sending unsolicited multicast
Router Advertisements from the interface, in milliseconds.
MUST be no less than 70 ms [RFC6275 7.5] and no greater
than 1800000 ms [RFC4861 6.2.1].
Default: 600000 milliseconds */
int MaxRtrAdvInterval;
#define RTADV_MAX_RTR_ADV_INTERVAL 600000
/* The minimum time allowed between sending unsolicited multicast
Router Advertisements from the interface, in milliseconds.
MUST be no less than 30 ms [RFC6275 7.5].
MUST be no greater than .75 * MaxRtrAdvInterval.
Default: 0.33 * MaxRtrAdvInterval */
int MinRtrAdvInterval; /* This field is currently unused. */
#define RTADV_MIN_RTR_ADV_INTERVAL (0.33 * RTADV_MAX_RTR_ADV_INTERVAL)
/* Unsolicited Router Advertisements' interval timer. */
int AdvIntervalTimer;
/* The TRUE/FALSE value to be placed in the "Managed address
configuration" flag field in the Router Advertisement. See
[ADDRCONF].
Default: FALSE */
int AdvManagedFlag;
/* The TRUE/FALSE value to be placed in the "Other stateful
configuration" flag field in the Router Advertisement. See
[ADDRCONF].
Default: FALSE */
int AdvOtherConfigFlag;
/* The value to be placed in MTU options sent by the router. A
value of zero indicates that no MTU options are sent.
Default: 0 */
int AdvLinkMTU;
/* The value to be placed in the Reachable Time field in the Router
Advertisement messages sent by the router. The value zero means
unspecified (by this router). MUST be no greater than 3,600,000
milliseconds (1 hour).
Default: 0 */
u_int32_t AdvReachableTime;
#define RTADV_MAX_REACHABLE_TIME 3600000
/* The value to be placed in the Retrans Timer field in the Router
Advertisement messages sent by the router. The value zero means
unspecified (by this router).
Default: 0 */
int AdvRetransTimer;
/* The default value to be placed in the Cur Hop Limit field in the
Router Advertisement messages sent by the router. The value
should be set to that current diameter of the Internet. The
value zero means unspecified (by this router).
Default: The value specified in the "Assigned Numbers" RFC
[ASSIGNED] that was in effect at the time of implementation. */
int AdvCurHopLimit;
/* The value to be placed in the Router Lifetime field of Router
Advertisements sent from the interface, in seconds. MUST be
either zero or between MaxRtrAdvInterval and 9000 seconds. A
value of zero indicates that the router is not to be used as a
default router.
Default: 3 * MaxRtrAdvInterval */
int AdvDefaultLifetime;
#define RTADV_MAX_RTRLIFETIME 9000 /* 2.5 hours */
/* A list of prefixes to be placed in Prefix Information options in
Router Advertisement messages sent from the interface.
Default: all prefixes that the router advertises via routing
protocols as being on-link for the interface from which the
advertisement is sent. The link-local prefix SHOULD NOT be
included in the list of advertised prefixes. */
struct list *AdvPrefixList;
/* The TRUE/FALSE value to be placed in the "Home agent"
flag field in the Router Advertisement. See [RFC6275 7.1].
Default: FALSE */
int AdvHomeAgentFlag;
#ifndef ND_RA_FLAG_HOME_AGENT
#define ND_RA_FLAG_HOME_AGENT 0x20
#endif
/* The value to be placed in Home Agent Information option if Home
Flag is set.
Default: 0 */
int HomeAgentPreference;
/* The value to be placed in Home Agent Information option if Home
Flag is set. Lifetime (seconds) MUST not be greater than 18.2
hours.
The value 0 has special meaning: use of AdvDefaultLifetime value.
Default: 0 */
int HomeAgentLifetime;
#define RTADV_MAX_HALIFETIME 65520 /* 18.2 hours */
/* The TRUE/FALSE value to insert or not an Advertisement Interval
option. See [RFC 6275 7.3]
Default: FALSE */
int AdvIntervalOption;
/* The value to be placed in the Default Router Preference field of
a router advertisement. See [RFC 4191 2.1 & 2.2]
Default: 0 (medium) */
int DefaultPreference;
#define RTADV_PREF_MEDIUM 0x0 /* Per RFC4191. */
};
#endif /* RTADV */
/* `zebra' daemon local interface structure. */
struct zebra_if
{
/* Shutdown configuration. */
u_char shutdown;
/* Multicast configuration. */
u_char multicast;
/* Router advertise configuration. */
u_char rtadv_enable;
/* Installed addresses chains tree. */
struct route_table *ipv4_subnets;
#ifdef RTADV
struct rtadvconf rtadv;
#endif /* RTADV */
#ifdef HAVE_IRDP
struct irdp_interface irdp;
#endif
#ifdef SUNOS_5
/* the real IFF_UP state of the primary interface.
* need this to differentiate between all interfaces being
* down (but primary still plumbed) and primary having gone
* ~IFF_UP, and all addresses gone.
*/
u_char primary_state;
#endif /* SUNOS_5 */
};
extern void if_delete_update (struct interface *ifp);
extern void if_add_update (struct interface *ifp);
extern void if_up (struct interface *);
extern void if_down (struct interface *);
extern void if_refresh (struct interface *);
extern void if_flags_update (struct interface *, uint64_t);
extern int if_subnet_add (struct interface *, struct connected *);
extern int if_subnet_delete (struct interface *, struct connected *);
#ifdef HAVE_PROC_NET_DEV
extern void ifstat_update_proc (void);
#endif /* HAVE_PROC_NET_DEV */
#ifdef HAVE_NET_RT_IFLIST
extern void ifstat_update_sysctl (void);
#endif /* HAVE_NET_RT_IFLIST */
#ifdef HAVE_PROC_NET_DEV
extern int interface_list_proc (void);
#endif /* HAVE_PROC_NET_DEV */
#ifdef HAVE_PROC_NET_IF_INET6
extern int ifaddr_proc_ipv6 (void);
#endif /* HAVE_PROC_NET_IF_INET6 */
#ifdef BSDI
extern int if_kvm_get_mtu (struct interface *);
#endif /* BSDI */
#endif /* _ZEBRA_INTERFACE_H */